Many substances will cause hydrogen peroxide to decompose into water and oxygen gas. It deserves the science teacher's special handling and storage attention. Substance is severely corrosive to skin, eyes and respiratory tract; very strong oxidant. Dangerous fire and explosion risk. Do not heat this substance. Wear appropriate protective clothing. TLV 1.4 mg/m3. 30% hydrogen peroxide requires special storage and handling procedures. It is a very strong oxidizing agent and severely corrosive to skin, eyes, and respiratory tract. Many common substances, including iron and other transition metals, will catalyze the decomposition to product copious amounts of oxygen gas and heat. The 30% solution is a dangerous fire and explosion risk—do not heat. Wear appropriate protective clothing. While a 3% and 6% solution of hydrogen peroxide is very weak, it is still an oxidizer and a skin and eye irritant.